Chair seat



FIG. 1 is a perspective view showing the new design, the broken lines are for environmental purposes only and form no part of the claimed design;

FIG. 2 is a front view of the chair seat illustrated in FIG. 1, the broken lines are for environmental purposes only and form no part of the claimed design;

FIG. 3 is a side view of the chair seat illustrated in FIG. 1, the opposite side is a mirror image of that which is illustrated in this FIG. 3, the broken lines are for environmental purposes only and form no part of the claimed design;

FIG. 4 is a is top view of the chair seat illustrated in FIG. 1, the broken lines are for environmental purposes only and form no part of the claimed design;

FIG. 5 is a bottom view of the chair seat illustrated in FIG. 1, the broken lines are for environmental purposes only and form no part of the claimed design;

FIG. 6 is a rear view of the chair seat illustrated in FIG. 1, the broken lines are for environmental purposes only and form no part of the claimed design; and,

FIG. 7 is a second perspective view of the chair seat illustrated in FIG. 1, the broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design of a chair seat, as shown and described. 